TOpic 32: Clade Reptiles Flashcards

1
Q

characteristics of non-avian reptiles

A
  • skin protection and shedding
  • eggs in leathery shells
  • 3 chambered heart
  • ectothermic
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2
Q

skin production and shedding in reptiles

A

non avian reptiles skin barrier is protected by thick, dry, keratinous scales creating a waterproof barrier (highly resistant to dessication)

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3
Q

oviparous

A

animals who bury their shelled eggs onland

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4
Q

two primary lineages of diapsids

A
  • lepidosaurs
  • archosaur
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5
Q

first tetrapods with adapted flight

A
  • pterosaurs
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6
Q

animals with
- box-like bony or cartilagous shell made of dorsal and ventral shields that are fused to the vertebrae, calvicles, and ribs
- toothless beaks
- single intomittent organ

A

turtles and tortoises

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7
Q

reptile clade with
- teeth fused to the jaw
- overlapping scales
- hemipenis (paired penis) à

A

lepidosaurs

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8
Q

two groups under lepidosaurs

A

tuataras and squamates

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9
Q

characteristics of tuataras

A
  • lack modified jaw structure
  • no intromitted organ
  • internal fertilization but they still have a hemipenis
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10
Q

squamates characteristics

A
  • loosely jointed jaws and skulls
  • hemipenis
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11
Q

groups under squamates

A
  • lizards and snakes
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12
Q

what are two things snakes lack, but lizards have?

A
  • limbs
  • external ears
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13
Q

snakes are bascially legless lizards, what did they evolve from

A

burrowing lizzards

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14
Q

most lizards and crocodiles do not ____

A

chew

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15
Q

archosaurs

A
  • lizards with socketed teeth and arent fused to the jawch
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16
Q

characteristics of crocodillians

A
  • single intromitted organ
  • maternal care
  • elongated and flattened skull
17
Q

extinct archosaur with membranous wings and are one of the three independant origins of true flight among vertebrates

A

pterosaurs

18
Q

who did bird evolve from

A

theropods

19
Q

small theropods with feathers

A

birds

20
Q

archaepoteryx

A

oldest known living bird

21
Q

characteristics of archaepteryx

A
  • feathers and wings
  • teeth
  • bony tail
22
Q

two similarities between theropods and birds

A
  • hollow bones
  • egg laying and feeding
23
Q

what kind of evolution did birds undergo

A

rapid adaptive radiation

24
Q

what kind of group are birds classified ass on a phylogenetic tree

A

monophyletic

25
Q

characteristics of birds

A
  • wings with keratin feathers
  • hollow bones for reduced weight
  • lack teeth in beaks
  • crop and gizzard digestive system for flight
  • organ reduction
  • endothermy
  • high metabolic rate
26
Q

what kind of heart chamber and respiratory system do birds have?

A

4 chambered heart, complex respiratory system system

27
Q

how do birds maintain body tempurature

A
  • use metabollic energy
  • feathers and fat
28
Q

birds are the only _____ endothermic animals

A

extant

29
Q

plumage

A

arrangement of feathers

30
Q

what fo most birds lack with organs, and how do they reproduce

A

lack an intromitted organ, reproduce with internal fertilization by connecting their cloacas together

31
Q

what shell distinguishes bird eggs from leathery reptile eggs

A

calcareous

32
Q

cloaca

A

shared opening for the digestive uriniary and reproductive tracts of birds, amphibians and reptiles

33
Q

birds that have the ability to feed themselves when born

A

precocial

34
Q

birds that heavily rely on the mother and need intensive parental care when born

A

altricial

35
Q
A